Alert archive / Arkansas / Tornado Warnings in 2011
Tornado Warning 55, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 23, 2011, 7:56 PM CDT for Madison County, Arkansas. It was in force for 19 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 23, 2011, 7:56 PM CDT (00:56 UTC)
- Expired
- Apr 23, 2011, 8:15 PM CDT
- In force
- 19 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
County Madison County, AR
The radar
The Western Arkansas radar (KSRX), 96 km from the middle of the area, began a volume at 00:59 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 23, 7:56 PM CDT | TSTM WND DMG | 2 E Boston, AR | 16 INCH DIAMETER TREES DOWN... REPORTED BY KNWA STORM CHASER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 23, 5:38 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.9 hours before the alert went out and 122 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 747 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
855
WFUS54 KTSA 240056
TORTSA
ARC087-240115-
/O.NEW.KTSA.TO.W.0055.110424T0056Z-110424T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
756 PM CDT SAT APR 23 2011
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN MADISON COUNTY IN NORTHWEST ARKANSAS
* UNTIL 815 PM CDT
* AT 754 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 2 MILES EAST OF BOSTON...MOVING EAST AT 30 MPH.
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...RED
STAR...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
&&
LAT...LON 3581 9351 3577 9351 3576 9352 3579 9361
3587 9359 3591 9349 3585 9351 3583 9351
3581 9350
TIME...MOT...LOC 0056Z 248DEG 25KT 3583 9354
$$1 follow-up statement
908
WWUS54 KTSA 240110
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
810 PM CDT SAT APR 23 2011
ARC087-240120-
/O.EXP.KTSA.TO.W.0055.000000T0000Z-110424T0115Z/
MADISON AR-
810 PM CDT SAT APR 23 2011
...THE TORNADO WARNING FOR SOUTHEASTERN MADISON COUNTY EXPIRES AT 815
PM CDT...
THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
TORNADO WARNING WILL BE ALLOWED TO EXPIRE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT.
LAT...LON 3581 9351 3577 9351 3576 9352 3579 9361
3587 9359 3591 9349 3585 9351 3583 9351
3581 9350
TIME...MOT...LOC 0110Z 248DEG 25KT 3587 9343
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 7:10 PM CDT | Special Weather Statement | TSA | Madison | 50 min |
| Apr 23, 7:27 PM CDT | Severe Thunderstorm Warning | TSA | Madison | 43 min |
| Apr 23, 10:15 PM CDT | Flash Flood Warning | TSA | Benton, Carroll, Madison, Washington | 6 hr |
| Apr 23, 10:39 PM CDT | River Flood Warning | TSA | Carroll | 64 hr |
| Apr 23, 10:51 PM CDT | Special Weather Statement | TSA | Benton, Carroll, Madison, Washington | 54 min |
| Apr 23, 10:57 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 63 min |
| Apr 23, 11:14 PM CDT | Severe Thunderstorm Warning | TSA | Carroll | 16 min |
| Apr 23, 11:32 PM CDT | Wind Advisory | TSA | 4 hr | |
| Apr 23, 11:50 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Madison, Washington | 42 min |
| Apr 24, 12:16 AM CDT | Special Weather Statement | TSA | Washington | 44 min |
| Apr 24, 3:49 AM CDT | Areal Flood Warning | TSA | Benton, Carroll, Madison, Washington | 8 hr |
| Apr 24, 9:51 AM CDT | Flash Flood Warning | TSA | Benton, Carroll, Crawford, Franklin, Madison, Washington | 4 hr |
| Apr 24, 2:05 PM CDT | Flash Flood Warning | TSA | Benton, Carroll, Madison, Washington | 6 hr |
| Apr 24, 6:24 PM CDT | Special Weather Statement | TSA | Crawford | 36 min |
| Apr 24, 6:29 PM CDT | Areal Flood Advisory | TSA | Crawford, Sebastian | 61 min |
| Apr 24, 6:48 PM CDT | Flash Flood Warning | TSA | Crawford, Franklin, Sebastian | 6 hr |
| Apr 24, 6:48 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Sebastian | 42 min |
| Apr 24, 6:52 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 53 min |
| Apr 24, 6:54 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin | 35 min |
Nearby
Tornado Warnings in Arkansas, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.